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GH4169高温合金经超细化预处理工艺后，在变形温度T为1000℃、初始应变速率5为1．14×10－3s－1的拉伸变形条件下，得到了良好的超塑性，其最高延伸率8max为467％，最低流动应力amin为43．1MPa。合金在较宽的变形温度范围（T为940～1020℃）和应变速率范围内（10－4～10－3s－1）显示出良好的超塑性。这对实际生产中工艺参数的选择及控制提供了很大的方便。应变速率敏感性指数m值可以表征材料超塑性性能的高低，但不能完全衡量超塑性能。
After ultrafine pretreatment of GH4169 superalloy, the superplasticity of GH4169 superalloy was obtained under the tensile deformation conditions of deformation temperature T of 1000 ℃ and initial strain rate 5 of 1.14 × 10-3s-1 The elongation 8max is 467% and the minimum flow stress amin is 43.1 MPa. The alloys show good superplasticity over a wide range of deformation temperatures (T of 940-1020 ° C) and strain rates (10-4-10-3s-1). This is the actual production process parameters in the selection and control provides a great convenience. Strain rate sensitivity index m value can characterize the level of material superplasticity, but can not fully measure the superplastic performance.